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转速估计是永磁同步电机无速度传感器下转速跟踪控制首要解决的问题,因在定子磁通中含有转速信息,给出了一种基于模型参考自适应(MRAS)的定子磁通估计结合龙伯格观测器设计思想构建速度观测器的方法。将观测器输出替代系统不可测状态用于反馈控制器设计,所设计的速度跟踪控制器包括非线性补偿器和PI调节器,保证了闭环系统对转速设定轨迹的有效跟踪。MATLAB/Simulink环境下的系统仿真研究给出了控制方法的有效性验证及与现有结果的比较。
The speed estimation is the primary problem to be solved for speed control of PMSM speed sensorless. Because the stator flux contains rotational speed information, a stator flux estimation based on model reference adaptive (MRAS) The Method of Constructing Speed Observer Based on Lattice Observer Design. The observer output alternative system is not measurable state for the feedback controller design, the design of the speed tracking controller includes a nonlinear compensator and PI regulator to ensure that the closed-loop system to track the speed setting track. The simulation of the system under MATLAB / Simulink environment gives the verification of the effectiveness of the control method and comparison with the existing results.